I was recently granted access to a area with an old gold wash plant on it with lots and lots of silt around it, The silt is made up of really fine dirt ( the host rock, schist) when the dirt is dry it is like powder there is also very fine iron stone and clay mixed in. Most importantly there is heaps of flour gold in it. I know that i have to paddle or puddle the dirt to remove the clay. I tried to pan this silt and i wore a jeweler's magnifier glasses. Some gold would stick to the bottom of the pan and some would float (i know that ultra fine gold will float). But some would wash away with the silt, could the gold that washes away really be mica it's way too fine to rub between your fingers. I have a set of sieves that go down to 100 minus should i purchase a minus 150 sieve i don't want to use acid but this could be a last resort
O yes i have found a few sub-half grammers in a twenty litter bucket of dirt i could still pick them out with my fingers.
Has anyone got an idea? any help Will be very appreseated
One more question How do i get the yellow faces above in with with my letter?